baber/WOPTO huggingface dataset:
Patent GB-1350293-A (GB)
Title: Preparation of pure phosphates from impure phosphoric acid
IPC: C01B25/46
Filed: 1971-06-16
Abstract: 1350293 Alkali metal and ammonium phosphates GIULINI GmbH Gebr 16 June 1971 [16 June 1970] 28302/71 Heading C1A Purified phosphates are produced from impure aqueous phosphoric acid by mixing the latter with an organic solvent capable of dissolving at least 9% by weight of water to form an aqueous, organic phase (A) containing phosphoric acid and an aqueous phase (B) containing inorganic impurities; mixing phase (A) in with one or more basic compounds in an amount calculated as oxide which is from 1 to 40% by weight of the quantity of basic compound(s) required to convert the H 3 PO 4  present in phase (A) to the dihydrogen phosphate whereby an aqueous phase (C) containing inorganic impurities and an aqueous organic phase (D) containing phosphoric acid are formed; and then mixing phase (D) with a further amount of basic compound(s) sufficient to convert the phosphoric acid present in phase (D) into the required phosphate salt forms, so forming an aqueous phase (E) containing these purified phosphate salts and an aqueous organic phase (F) containing the organic solvent. The organic solvent preferably comprises an alcohol, e.g. isopropanol or butanol and may be a mixture of isopropanol with another aliphatic alcohol containing from 5 to 9 carbon atoms or a mixture of isopropanol with one or more hydrocarbons, e.g. cyclohexane or toluene. The volume ratio of aqueous phosphoric acid to organic solvent in the mixing step is preferably from 1 : 0À25 to 1 : 20 and where the organic solvent comprises butanol this ratio should be at least 1 : 4. The basic compound(s) added to phases (A) and (D) are preferably in aqueous solution and may comprise an alkali metal oxide, hydroxide, carbonate or basic phosphate, ammonia or a basic ammonium compound and the aqueous phosphoric acid mixed with the organic solvent may optionally contain one or more dissolved alkali metal and/or ammonium compounds. Phase (B) may be mixed with sulphuric acid to convert phoshates present into H 3 PO 4 , sulphates thus formed being removed from the latter in an aqueous phase (H) formed by mixing the treated phase (B) with more organic solvent. The aqueous organic phase (G) also produced may then be combined with phase (C) to produce an aqueous organic phase (J) containing H 3 PO 4  and an aqueous phase (K). Additional purified phosphate salts may then be obtained from phase (J) by the addition of more basic compounds. The process may be carried out continuously and at 5 to 100 C. Organic impurities may be removed from the impure phosphoric acid before the neutralization by extraction at 10-100 C. with a waterimmiscible organic solvent, e.g. a mixture of octyl alcohol and diesel oil.
Patent GB-285140-A (GB)
Title: Improvements in or relating to rotary intaglio printing machines
IPC: B41F9/16
Filed: 1926-11-10
Abstract: 285,140. Mailõnder, W. Nov. 10, 1926. Inking-apparatus.-In a rotary intaglio printing- machine employing a tensioned printing-plate, means are provided to remove the strip of colour remaining on the plate after the ordinary scraper is lifted, to prevent accumulation of colour in the cylinder gap containing the plate-tensioning devices. In one form, Fig. 1, the colour-removing means consists of a suction device 5 arranged adjacent to the scraper 4 at the bottom portion of the printing-cylinder and carried by a pivoted arm 5<1> which is actuated by a cam 8 and roller 9 to cause the suction device 5 to engage the plate just before the scraper 4 is removed from the plate and to remain in operative position until just after the scraper 4 is again brought into contact with the plate. When desired the device 5 may be turned down into a trough 10 to be cleaned. The colour-applying roller 11 normally runs in contact with a roller 13 partly immersed in a colour trough 12 and is carried by arms 14 pivoted about the arms of the roller 13 and actuated by a cam 16 and roller 17<1> to apply colour to the design-bearing portion of the plate. By swinging the arms 14 so that the roller 11 is supported on a wedge 17, the roller may be retained out of contact with the cylinder 1. A pair of hooks 21 movable transversely of the machine on rails 22 are provided to facilitate removal of the roller 11 from the machine. In modifications the suction device and scraper 4 are combined into a single unit, the action of the suction device being timed by a cam-actuated valve. In the form shown in Fig. 7, the inkremoving means consists of a stripping-roller 24 having a surface of brass or other non-porous material moving in the opposite direction to the surface of the cylinder at the line of contact. The roller is timed to act in a similar manner to the suction device 5. The colour removed by the roller 24 is stripped therefrom by a doctor 30 and led to a trough 31. A stripping-plate 33 with upstanding side-edges is also provided to conduct colour from the scraper 4 to the trough 12.
Patent GB-1429690-A (GB)
Title: Method of preparing cardiotonic acetylated glucosides
IPC: C07J19/00
Filed: 1973-06-14
Abstract: 1429690 Acetyl cardioglycosides FABRICA DE ANTIBIOTICS IASI 14 June 1973 28339/73 Heading C2U In a process for extracting acetyldigoxin and acetyldigitoxin from leaves of Digitalis lanata, the leaves are first soaked in acidified water of pH 3À0-3À5 whereby the enzyme digilanidase in the leaves effects hydrolysis of the glucose moiety of the plant lanatosides. After addition of ammonium sulphate, the hydrolysed mass is extracted with aqueous methanol or ethanol, and the extract worked up by a series of specified steps involving extraction, liquid-liquid distribution, chromatography and crystallizetion.
Patent GB-248084-A (GB)
Title: Improvements in grinding mills
IPC: B02C9/00
Filed: 1924-11-28
Abstract: 248,084. Barford & Perkins, Ltd., Perkins, J. E. S., and Perkins, F. A. Nov. 28, 1924. Disc mills; roller mills.-In a portable grist mill of the kind comprising a grinding-box and a pair of crushing-rolls, the rolls which crush the material and the grinding-box which grinds to flour the flattened grain received from the rolls are arranged in substantially the same horizontal plane and elevating-means is mounted on the mill framework on one side of the mills to feed the flattened grain passing from the rolls to the grinding-box. As shown in Figs. 1 and 2, the rolls 2 and grinding-box 3 mounted in substantially the same horizontal plane are fed from a divided feed-hopper 4, and a bucket elevator 7 mounted on the framework 1 on one side of the mills 2, 3 receives the material passing from the rolls 2 and raises it to the hopper 4 whence it passes by a shoot 8 to the grinding-box. The elevator is driven by a belt 11 from the main shaft 10. In a modification, Fig. 3, the flattened grain from the rolls 2 is fed through a pipe 6 to a fan 12 which elevates it to the grinding-box 3 and delivers the meal from the grinding-box to the collecting bins. Vanes or fins may be formed on or attached to the grinding- plates to set up a centrifugal action in the grinding-box to deliver the meal from the box to bins situated at a distance from the mill.
Patent GB-225568-A (GB)
Title: An improved rotary fluid meter or compressor
IPC: G01F1/10
Filed: 1924-11-28
Abstract: 225,568. Compagnie pour la Fabrication des Compteurs et Materiel d'Usines Ó Gaz. Nov. 28, 1923, [Convention date]. Screw Sprengel pumps; coiled tube type meters.-A meter or compressor, more particularly for gases, consists of a screw member having a plurality of threads and rotating over a liquid seal contained in a casing which has only a small clearance from the screw member. The screw, of aluminium, has four threads 1 - - 4 with the end portions cut off to a conical form and is roughly balanced by the thrust of the liquid seal. The casing c is enlarged at the lower portion g to allow return of the sealing liquid.
Patent GB-657614-A (GB)
Title: Method and apparatus for treating rubber and the like
IPC: B29C48/515
Filed: 1946-09-25
Abstract: Vulcanized synthetic rubber is reclaimed by forcing it through a channel which is sufficiently long and narrow to expose substantially all of the material to the wall surface of said channel while holding the wall surface at a temperature of 300-500 DEG  F., at such a rate that the material attains before discharge the desired plasticity. The synthetic rubber may be butyl rubber or those known under the names "Buna" S and "Buna" N ("Buna" being a Registered Trade Mark). The method may be used with the short period process of Specifications 610,812 and 610,901, [both in Group V].  Preferably the material is kept at a temperature of 380-410 DEG  F.  Reclaiming and softening agents, such as tertiary lauryl mercaptan, straight-chain lauryl mercaptan, dioctyl disulphide, dihexadecyl disulphide, mono-ethanol amine, terpinolene, Rubbersol, Staybelite resin, stearic acid, oleic acid, lecithin, Solvesso, wood resin, engine oil, tertiary butyl catechol, ethyl butyric acid and Naftolen may also be added.  A preferred apparatus for carrying out the process is described in Group V.  Specification 657,637 is referred to.
Patent GB-903910-A (GB)
Title: Multiple arc welding
IPC: B23K9/173
Filed: 1958-09-08
Abstract: 903,910. Welding by fusion. AIR REDUCTION CO. Inc. Sept. 8, 1958 [Sept. 16, 1957], No. 28765/58. Class 83 (4). [Also in Group XXXV] In gas shielded electric arc welding apparatus in which two series connected arcs are formed between consumable electrodes continuously fed at constant speed and a common workpiece, a source of welding current has its electrical centre connected to the workpiece and is connected across the electrodes. Alternating or direct welding current is used. Two like D.C. generators 13, 27, Fig. 1, are connected in series between the electrodes fed by mechanisms 6, 22 to inert gas shielded guns 3, 4 attached to a frame 1 movable relative to the workpiece 2. To start welding the welding current is connected and the feeding mechanisms 6, 22 are driven by a common motor or two synchronized motors. When the first electrode contacts the workpiece an arc is struck by current from one generator passing through the connection 35 from the workpiece to the lead 16 connecting the generators. Since the voltage of the other generator is still applied across the gap between the other electrode and the workpiece the second arc starts as soon as contact is made. With two balanced arcs, the current through the connection 35 is small and this connection may be disconnected. The electrode fed to the straight polarity arc is treated with an emissive agent as described in Specification 738,284. In a modification, the workpiece 2, Fig. 4, is connected to a lead 50 between secondary windings 45, 47 supplied by primary windings fed by a single phase supply. Alternatively, the two secondary windings may be coupled to a single primary winding. Using alternating current both electrodes are treated with an emissive agent as described in Specification 731,836. Specifications 687,666 and 713,507 also are referred to.
Patent GB-536876-A (GB)
Title: Improvements relating to structures formed of fabric and polymerised isobutylene-butadiene
IPC: C08J5/04
Filed: 1939-10-26
Abstract: 536,876. Isobutylene-butadiene co-polymer compositions. STANDARD OIL DEVELOPMENT CO. Oct. 26, 1939, No. 28767. Convention date, Dec. 30, 1938. Drawings to Specification. [Class 2 (iii)] [Also in Group VIII] Structures containing fabric and isobutylenebutadiene co-polymers prepared as described in Specifications 513,521 and 523,248 are made by impregnating and coating the fabric with the co-polymer compounded with sulphur, shaping, and heating to produce combination of the sulphur with the co-polymer. The copolymer may be applied by calendering, or from solutions in petroleum ether, chloroform or carbon di-sulphide or aqueous emulsions made by the use as emulsifying agents of mahogany sulphonates, sodium abietate, sodium stearate or triethanolamine oleate. The composition may comprise stearic acid, fillers such as carbon black, zinc oxide, blanc fixe, titanium di-oxide whiting and lithopone and vulcanization accelerators. In making a tyre woven canvas or cotton or regenerated cellulose cord fabric is impregnated with the compounded co-polymer, side wall and tread portions of similar material are added and the whole heated in a mould conveyer or transmission belts may be similarly made from a plurality of fabric plies. The manufacture of rain-coats, surgical aprons, gloves and dressings, footwear, oxygen tents and hot-water bottles is also referred to.
Patent GB-1305593-A (GB)
IPC: G01R1/073
Filed: 1970-06-15
Abstract: 1305593 Testing and sorting semi-conductor chips INTERNATIONAL BUSINESS MACHINES CORP 15 June 1970 [30 June 1969] 28778/70 Heading G1U A device for use in the testing, and subsequent sorting, of semi-conductor chips comprises (1) a base 20, Figs. 2, 3, on to which a member 22, carrying a semi-conductor wafer 24 diced into chips 38, can be accurately positioned, (by means not shown), temporarily held by a vacuum 41, 42, and then clamped 44, 46, (2) an intermediate member 61 including a matrix of compartments 32 corresponding to the individual chips 38 of the diced wafer and arranged so that when it is fitted on to the base as shown in Fig. 3 (not shown), and clamped by screws 60, each chip 38 is individually held in position so that the whole unit may be immersed in a solvent to wash away the adhesive fixing the wafer 24 to the member 20, without any movement of the chips, and (3) an upper member 62 which includes a disc 67 in which a plurality of tubes 65 terminate, the arrangement being such that by lowering the upper member on to the intermediate member as shown in Fig. 3 (not shown), and then applying a vacuum to selected tubes 65, selected chips may be held in the matrix of compartments 32, so that the intermediate member and the upper member may be jointly removed from the base member in order to transport the selected chips to an appropriate location. In operation Fig. 9, a semi-conductor wafer 24 is fixed to the member 22 by a suitable adhesive, the member 22 is accurately positioned on the base 20 and clamped, the wafer is diced and the individual chips are tested. The intermediate member carrying the matrix of compartments 32 is then put in position to hold the individual chips, and the adhesive is washed away. Finally, the upper member is placed in position, vacuum is applied to selected tubes 65 and the selected chips are transported away. The whole operation is computer controlled. (For Figures see next page)
Patent GB-481721-A (GB)
Title: Improved method of laundry washing of clothes by means of alkaline soap solution
IPC: C11D11/00
Filed: 1937-10-21
Abstract: 481,721. Washing. EKSTROM, A. Oct. 21, 1937, No. 28796. [Class 138 (ii)] In laundry washing by means of an alkaline soap solution, the solution is prepared in a storage tank common to a plurality of washing- machines which may contain goods of different degrees of dirtiness, and the solution is run to the machines and used without any further addition of detergents irrespective of the degree of dirtiness of the goods. The liquid is continuously circulated through a centrifugal separator to remove dirt and fat particles emulsified in the washing liquid and is preferably returned to the storage tank.
Patent GB-843930-A (GB)
Title: Improvements in or relating to testing apparatus for cylindrical bodies
IPC: G01B7/12
Filed: 1957-09-13
Abstract: 843,930. Gauges. CAVE, J. A., and TAYLOR, TAYLOR & HOBSON Ltd. Sept. 10, 1958 [Sept. 13, 1957], No. 28897/57. Class 106 (2). [Also in Group XXXVIII] The diameter of a cylindrical workpiece relative to a standard is measured in an apparatus comprising three stops which engage the cylinder and are adjustable with the standard in position but are constrained to move so that they are always at the corners of a rightangled triangle. Two of the stops, a reference stop and a back stop, are clamped with the standard in position and on replacement of the standard by the cylinder under test any difference in diameter is shown by movement of the third stop relative to the other two. In Fig. 3 the cylinder N is engaged by a reference stop K, a back stop L and a feeler stop A. The reference stop is attached to a J-shaped member K<SP>2</SP> which can be moved by a rack and pinion K4 in a direction parallel to the line joining the reference stop and feeler stop, and then clamped at K<SP>9</SP>. The back-stop L is carried by a member L<SP>3</SP> which can slide along a slot in the J-member parallel to the line joining K and L. By means of a projection on the casing B<SP>6</SP> (Fig. 1, not shown), the member L<SP>3</SP> is constrained to move in a direction parallel to the line joining L and A, so that the desired right-angled relationship between K, L and A is maintained while these stops are being adjusted to touch the standard cylinder, L being then clamped at M. The feeler A is attached to an arm C which can move vertically between stops G, G, and is kept in contact with the cylinder by a spring F. The arm is constrained against sideways movements by spring ligaments E, E<SP>2</SP>, the former of which engages an armature H to give an electrical indication of the cylinder diameter (see Group XXXVIII). Preferably the apparatus is pivoted at P to a grinding machine and is periodically brought into position to check the progress of the machining. As shown, the stops A, K, L form an isosceles triangle but this need not be so, and the form of the triangle may change during adjustment (e.g. by having curved guides) as long as the angle A, L, K is always a right angle.
Patent GB-227246-A (GB)
Title: Improvements in or relating to the electric lighting of lavatories and the like
IPC: H01H3/16
Filed: 1923-11-16
Abstract: 227,246. Metcalf, C. F., and Newby, G. K. Nov. 16, 1923. Switches, quick-break ; retractive switches ; looks operating electric switches. - Relates to switches for lighting lavatories and the like and of the kind which are operated by shorting the, bolt or the like to secure the door. The switch is connected to a lever pivoted within a casing adjacent or in line with an opening in the casing through which the bolt enters to secure the door. The attachment is mounted on the door jamb adjacent the bolt a and comprises a casing b with a hinged or detachable cover and a slot c for the bolt to enter and secure the door. A lever d pivoted at d<1> is connected by a link e to a tumbler or knife switch f adapted to bridge contacts g and light the lamp when the bolt is shot and engages the lever d to lift it. A notch j holds the lever d when the switch is closed, and a spring associated with the pivot d' opens the switch when the bolt is withdrawn, Fig. 1, showing the bolt about to enter and close the. switch. The contacts f are mounted on a fibre base k, which may be mounted on a mica or like sheet l, and an opening m admits the leads from the terminals h to the lamp, the opening being threaded to receive the tube enclosing the leads. Screw-openings n may be provided for securing the attachment in position.
Patent GB-765890-A (GB)
Title: Improvements in or relating to a process for the microbiological production of vitamin b
IPC: C12P19/42
Filed: 1954-10-07
Abstract: Vitamin B12 is obtained in a microbiological process by means of micro-organisms of the genus Streptomyces which is characterized in that to a culture medium thereof, at a time when the percentage of available quantity of nutrient substance in the culture liquid lies between 0.01 and 0.5 per cent by weight, is added further quantities of nutrient substance such that the percentage of available nutrient in the culture liquid is maintained between 0.01 and 0.5 per cent by weight, Vitamin B12 is recovered from the cell material thus produced. Preferably a quantity of nutrient substance is added such that the concentration thereof is kept at a value lying between 0.01 per cent and 0.05 per cent by weight.  As nutrient substance there may be used glucose, maltose, lactose, saccharose, sorbitol and a protein hydrolysate.
Patent GB-322043-A (GB)
Title: A new or improved apparatus for delivering lighted or unlighted cigarettes from a container
IPC: A24F15/04
Filed: 1928-10-09
Abstract: 322,043. Brigg, C. J. Oct. 9, 1928. Igniters combined with cigarette-delivery apparatus; lighting cigars and the like by electric devices. - In a cigarette delivery and lighting apparatus, particularly for use on motor vehicles, a spring-pressed plunger g is partially rotated by means of a knob g<1> to rock a part d' and thereby deliver a cigarette x from a shelt e to a tray f and then moved inwardly to press the cigarette against an electric igniter i, which is moved against the action of its spring supporting arm i<1> and a contact i<2> brought into engagement with a contact i<3> on a spring arm i<4> to close the igniter circuit, a passage g<5> in the plunger being brought into registar with a passage g' in communication with the vacuum tank of the vehicle or other suction source. The part d' is rocked by a pin h on the plunger engaging between lugs d', the pin being disengaged from a fixed lug a<7> at the end of the downward movement. The cigarettes are fed through an aperture c<3> in a pivoted tray c to the shelf e, the tray being rocked by the part d' engaging lugs c<4> for jogging the cigarettes. A curved portion d<3> of the part d<1> prevents the cigarette above the opening c<3> from falling on to the shelf e until the part d<1> is returned to the normal position. The magazine h is detachably secured to the casing a by a rib b<1> engaging a recess a<2> and is provided with a shutter b<3>, operated by a button b<4> and held in the open or closed position by a spring plate b<5>. The apparatus may be fitted in a recess in the dashboard flush with the surface, the magazine being adapted to slide on. the casing and the tray f being tiltable for removing a cigarette. The Provisional Specification describes also a construction in which the igniter is carried by a spring-controlled plunger, the part d<1> is dispensed with, and a cigarette is delivered on to a tray or rest by a spring arm operated by the suction plunger. Specification 313,309 is referred to.
Patent GB-797017-A (GB)
Title: New barbituric acid derivatives and process for their production
Filed: 1955-10-12
Abstract: The invention comprises compounds of the general formula <FORM:0797017/IV (b)/1> (wherein R is a tertiary alkyl group, R1 and R2 are hydrogen atoms or alkyl or alkenyl groups, Z is oxygen or NH and X is oxygen, NH or sulphur) and salts thereof; and their preparation by condensing an ester <FORM:0797017/IV (b)/2> (wherein R3 is alkyl and Y is CN or COOR4, R4 being alkyl) with a carbamide NH2.CX.NHR2 or a salt thereof in the presence of a solvent, e.g. a lower alkanol, and a strongly basic catalyst, e.g. an alkali metal, whereafter the product may be hydrolysed.  In examples: (1) urea and diethyl neopentyl malonate given neopentyl barbituric acid; (2) ethyl neopentylcyanoacetate and urea give 5-neopentyl-4-iminobarbituric acid ; (3) diethyl neopentyl malonate and guanidine carbonate give 5-neopentyl-2-iminobarbituric acid; (4) ethyl neopentylcyanoacetate and guanidine carbonate give 5-neopentyl - 2,4 - diiminobarbituric acid; hydrolysis with conc. HCl of the products of Examples (2), (3) and (4) gives the product of Example (1); (5)-(19) the following compounds are prepared by condensation of the appropriate urea or thiourea with the appropriate substituted malonic ester: 1-methyl-, 5-methyl-, 5-ethyl-, 5-allyl- and 1-methyl-5-allyl-5-neopentyl-barbituric acids, 5-allyl-5-(b ,b -dimethylbutyl)-barbituric acid, 5 - ethyl - 5 - neopentyl-, 5 - allyl - 5-neopentyl- and 5 - allyl - 5 - (b ,b  - dimethylbutyl) - 2 - thiobarbituric acids; diethyl allylneopentylmalonate and guanidine carbonate give an iminobarbituric acid which is hydrolysed to 5 - allyl - 5 - neopentylbarbituric acid and 5 - ethyl- and 5 - allyl - 5 - (b ,b  - dimethylbutyl)-barbituric acids are similarly prepared. The sodium salts of the barbituric acids are prepared by refluxing the acids with sodium in methanol.  Specification 795,173 is referred to.